<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片式图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <!-- :gutter 设置间隙 -->
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>

        <el-col :span="4">
          <el-button type="primary" @click="goAddPage"
            >添加商品</el-button
          >
        </el-col>
      </el-row>
    
      <!-- table 表格区域 -->
      <el-table :data='goodslist' border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格（元）" prop="goods_price" width='95px'></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width='80px'></el-table-column>
        <el-table-column label="商品创建时间" prop="add_time" width='110px'>
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width='130px'>
          <template slot-scope="scope">
            <el-button size='mini' type="primary" icon="el-icon-edit"></el-button>
            <el-button size='mini' type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
          </template>  
        </el-table-column>

      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10, 30, 50]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
  export default {
    data() {
      return{
        // 查询参数对象
        queryInfo: {
          query: '',
          pagenum: 1,
          pagesize: 10
        },
        // 商品列表
        goodslist: [],
        // 总数据条数
        total: 0,
        // 
      }
    },
    created() {
      this.getGoodsList()
    },
    methods: {
      // 根据分页获取对应的商品列表
      async getGoodsList() {
        const { data: res } = await this.$http.get("goods", {
          params: this.queryInfo,
        });
        // console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("获取商品列表失败！");
        }
        this.goodslist = res.data.goods;
        this.total = res.data.total;
      },
      // 监听 pagesize 改变的事件
       handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize;
        this.getGoodsList();
      },
      // 监听 页码值 改变的事件
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage;
        this.getGoodsList();
      },
      // 根据 ID 删除对应商品信息
      async removeById(id) {
        // 弹框询问商品是否删除数据
        const confirmResult = await this.$confirm('此操作将永久删除商品文件, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        }).catch(err => err)

        // 如果商品确认了删除，则返回值为字符串 confirm
        // 如果商品取消了删除，则返回值为字符串 cancel
        if(confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }

        const {data :res} = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) {
            return this.$message.error("删除商品失败！");
        }
        // 重新获取商品列表数据
        this.getGoodsList();
        this.$message.success("删除商品成功");
      },
      // 添加商品
      goAddPage() {
        this.$router.push('/goods/add')
      }
    }
  }
</script>

<style scoped>

</style>